I have been at this for a while, trying to program my ATtiny84A using an Arduino as ISP. But I seem to be stuck and cannot figure out why. I am trying to transfer my arduino nano project to smaller footprint using the ATtiny to eventually print a custom PCB. In any case, I can’t seem to connect t…

Unable to program ATtiny84A with Arduino Nano as ISP – “Invalid device signature”

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